Amisan Observatory looks out over the Dadaepo sea and the sandbars at the mouth of the Nakdonggang River, and sits near Dadaepo Molundae Cathedral. The three-story observatory has indoor and outdoor viewing areas, a cafe, and restrooms, and people come here for the Dadaepo sunset in the late afternoon. A parking lot is at the top, and exhibits and interpretive signs for the Busan National Geopark are on display. It can be reached on foot from Dadaepo Beach, and the mouth of the Nakdonggang River and the Dadaepo sunset are visible on both clear and cloudy days.